Book digitized by Google from the library of the University of Michigan and uploaded to the Internet Archive by user tpb.
Vol. 1 only was published by Longman's, Green, and Co. in 1974. - Variant imprint to Vol. 2 reads: London Reeves and Turner 1892. - Variant imprint to Vol. 3 reads: London Church of Humanity 19, Chapel Street, Lamb's Conduit Street, W.C. 1900. - Colophon varies between volumes. - With an erratum